code: def rgba(red, green, blue, a):
      """rgba: generates matplotlib compatible rgba values from html-style rgba values"""
      return (red / 255.0, green / 255.0, blue / 255.0, a)
  
file_path: dragonfly/dragonfly/utils/plot_utils.py
imports: from __future__ import division
  import pickle
  import argparse
  import matplotlib.pyplot
  import matplotlib
  from scipy.io import loadmat
  import numpy
label_desc: Use image node_id 1 for calling a global function with example usage: rgba(red, green, blue, a) and returns: unknown,  unknown,  unknown,  a